<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<a href="3.html">跳转3</a>
		<button type="button" onclick="doqian()">前进</button>
		<button type="button" onclick="dohou()">后退</button>
		<button type="button" onclick="reload3()">刷新</button>
	</body>
	<script type="text/javascript">
		function doqian(){
			history.go(1)
			//history.forward()
		}
		function dohou(){
			history.go(-1)
			//history.back()
		}
		function reload3(){
			location.reload()
		}
	</script>
</html>
